122447620 has 12 divisors (see below), whose sum is σ = 257140044. Its totient is φ = 48979040.

The previous prime is 122447603. The next prime is 122447627. The reversal of 122447620 is 26744221.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 78251716 + 44195904 = 8846^2 + 6648^2 .

It is not an unprimeable number, because it can be changed into a prime (122447627) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3061171 + ... + 3061210.

It is an arithmetic number, because the mean of its divisors is an integer number (21428337).

Almost surely, 2^122447620 is an apocalyptic number.

122447620 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

122447620 is an abundant number, since it is smaller than the sum of its proper divisors (134692424).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

122447620 is a wasteful number, since it uses less digits than its factorization.

122447620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6122390 (or 6122388 counting only the distinct ones).

The product of its (nonzero) digits is 5376, while the sum is 28.

The square root of 122447620 is about 11065.6052703863. The cubic root of 122447620 is about 496.5733970969.

The spelling of 122447620 in words is "one hundred twenty-two million, four hundred forty-seven thousand, six hundred twenty".